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1 DCRA ) 1 Tactile Interface with Air Jets for Floating Images Aya Higuchi, 1 Nomin, 1 Sandor Markon 1 and Satoshi Maekawa 2 The new optical device DCRA can display floating images in free air Experience with interface systems using floating images shows the need to improve the user experience with tactile feedback. We report on the development of a system that uses air jets to give tactile stimulus to users interacting with the floating images. The system delivers compressed air pulses to the fingertips of a user touching the plane of the floating image. We have performed tests to find the range of air jet parameters that give the best user experience. 1 Fig. 1 Floating Touch Display. 1 Kobe Institute of Computing, Graduate School of Information Technology 2 Multimodal Communication Group, Universal Media Research Center, National Institute of Information and Communications Technology DCRA 1 c 2012 Information Processing Society of Japan

2 2). 3) 4) 1.2 NICTNICT DCRA Dihedral Corner Reflector micro-arraysdcra DCRA DCRA DCRA 3D DCRA PC USB PC PC ON / OFF Velleman K8055 K8055 K8055 PC USB PC K minimo minimo 0.1MPa 40dB 3L / min 60Hz A B A 2.5mm B 3.0mm 2 c 2012 Information Processing Society of Japan

3 Fig. 4 4 Front View of Equipment. 2 Fig. 2 Experimental Circuit. 5 A B Fig. 5 Air Nozzle A (left) and B (right). Fig. 3 3 Top View of Equipment. Python mm 82mm 145mm A B A B A B B A A A 6 A ms 3 c 2012 Information Processing Society of Japan

4 1 TOSHIBA CPU Intel Core 2 Duo P GHz 2GB OS Ubuntu Linux11.10 Crystage Incorporation CR064DVT7C NEXIO Touch Screen NIB Series NICT DCRA 9 1 A 49mm 41mm B 90mm 37mm A B 41mm Y N A 1 A Fig. 7 Flow of Experiment (2). 6 1 Fig. 6 Flow of Experiment (1). B 7 B 2 B A A ms 15ms 35ms 30ms 4 c 2012 Information Processing Society of Japan

5 Fig Experiment (1); Rate of Tactile Recognition for Different Jet Times. B A 9 B Fig B Experiment (2); Distribution of Tactile Recognition by Position (Air Nozzle B). 9 2 A Fig. 9 Experiment (2); Distribution of Tactile Recognition by Position (Air Nozzle A) A B 11 A 5mm 100% 5mm 55mm A 100% 5mm B 5mm 60% 20mm 50%45mm B 100% 3.4 A 15ms 15ms 15ms 5 c 2012 Information Processing Society of Japan

6 4. Fig Experiment (2); Decline in Rate of Tactile Recognition by Distance. ATM 5)6) 12 35ms B B A A B 2.5mm 5mm 30ms 100% 12 Fig. 12 Image of the application of Fireworks c 2012 Information Processing Society of Japan

7 13 7) Akio Yamamoto Benjamin Cros Hironori Hashimoto and Toshiro Higuchi, Control of Thermal Tactile Display Based on Prediction of Contact Temperture, Proceedings of the 2004 International Conference on Robotics & Automation, pp ,2004 8) T. Hoshi, M. Takahashi, K. Nakatsuma and H. Shinoda, Touchable Holography, Proc. of SGGRAPH 2009, Emerging Technologies, article No.23, Fig. 13 New Test Equipment ),,,, : ; 2010, ),, : 2 - -;, Vol.30, No.52, Page49-52(2006) 3) Suzuki, Y., Kobayashi, M., Air Jet Driven Force Feedback in Virtual Reality, IEEE Computer Graphics and Applications, Vol. 25, pp , Issue1, ),, : ;, Vol.47, No.8, Page (2006) 5) : ; ) : ; c 2012 Information Processing Society of Japan

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